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-rw-r--r--docs/ref/contrib/gis/db-api.txt2
-rw-r--r--docs/ref/contrib/gis/geoquerysets.txt2
-rw-r--r--docs/ref/contrib/gis/tutorial.txt4
-rw-r--r--docs/ref/contrib/syndication.txt2
4 files changed, 5 insertions, 5 deletions
diff --git a/docs/ref/contrib/gis/db-api.txt b/docs/ref/contrib/gis/db-api.txt
index af2c1c04a0..7b40058fe0 100644
--- a/docs/ref/contrib/gis/db-api.txt
+++ b/docs/ref/contrib/gis/db-api.txt
@@ -401,7 +401,7 @@ Aggregate PostGIS Oracle SpatiaLite
======================= ======= ====== ==========
.. rubric:: Footnotes
-.. [#fnwkt] *See* Open Geospatial Consortium, Inc., `OpenGIS Simple Feature Specification For SQL <http://www.opengis.org/docs/99-049.pdf>`_, Document 99-049 (May 5, 1999), at Ch. 3.2.5, p. 3-11 (SQL Textual Representation of Geometry).
+.. [#fnwkt] *See* Open Geospatial Consortium, Inc., `OpenGIS Simple Feature Specification For SQL <https://portal.ogc.org/files/?artifact_id=829>`_, Document 99-049 (May 5, 1999), at Ch. 3.2.5, p. 3-11 (SQL Textual Representation of Geometry).
.. [#fnewkb] *See* `PostGIS EWKB, EWKT and Canonical Forms <https://postgis.net/docs/using_postgis_dbmanagement.html#EWKB_EWKT>`_, PostGIS documentation at Ch. 4.1.2.
.. [#fndistsphere15] *See* `PostGIS documentation <https://postgis.net/docs/ST_DistanceSphere.html>`_ on ``ST_DistanceSphere``.
.. [#] Refer :ref:`mysql-spatial-limitations` section for more details.
diff --git a/docs/ref/contrib/gis/geoquerysets.txt b/docs/ref/contrib/gis/geoquerysets.txt
index 9a8bb3f29f..7aa5c94681 100644
--- a/docs/ref/contrib/gis/geoquerysets.txt
+++ b/docs/ref/contrib/gis/geoquerysets.txt
@@ -935,7 +935,7 @@ Example::
>>> u = Zipcode.objects.filter(poly__within=bbox).aggregate(Union(poly)) # A more sensible approach.
.. rubric:: Footnotes
-.. [#fnde9im] *See* `OpenGIS Simple Feature Specification For SQL <http://www.opengis.org/docs/99-049.pdf>`_, at Ch. 2.1.13.2, p. 2-13 (The Dimensionally Extended Nine-Intersection Model).
+.. [#fnde9im] *See* `OpenGIS Simple Feature Specification For SQL <https://portal.ogc.org/files/?artifact_id=829>`_, at Ch. 2.1.13.2, p. 2-13 (The Dimensionally Extended Nine-Intersection Model).
.. [#fnsdorelate] *See* `SDO_RELATE documentation <https://docs.oracle.com/en/
database/oracle/oracle-database/18/spatl/spatial-operators-reference.html#
GUID-97C17C18-F05E-49B4-BE11-E89B972E2A02>`_, from the Oracle Spatial and
diff --git a/docs/ref/contrib/gis/tutorial.txt b/docs/ref/contrib/gis/tutorial.txt
index c585dd9248..3a200ca6b7 100644
--- a/docs/ref/contrib/gis/tutorial.txt
+++ b/docs/ref/contrib/gis/tutorial.txt
@@ -38,7 +38,7 @@ basic apps`_ project. [#]_
.. _OGC: https://www.opengeospatial.org/
.. _world borders: https://thematicmapping.org/downloads/world_borders.php
-.. _GeoDjango basic apps: https://code.google.com/p/geodjango-basic-apps/
+.. _GeoDjango basic apps: https://code.google.com/archive/p/geodjango-basic-apps
Setting Up
==========
@@ -737,7 +737,7 @@ position.
.. _OpenLayers: https://openlayers.org/
.. _Open Street Map: https://www.openstreetmap.org/
-.. _Vector Map Level 0: https://earth-info.nga.mil/publications/vmap0.html
+.. _Vector Map Level 0: http://web.archive.org/web/20201024202709/https://earth-info.nga.mil/publications/vmap0.html
.. _OSGeo: https://www.osgeo.org/
.. _osmgeoadmin-intro:
diff --git a/docs/ref/contrib/syndication.txt b/docs/ref/contrib/syndication.txt
index e9063d0629..a268bad8cc 100644
--- a/docs/ref/contrib/syndication.txt
+++ b/docs/ref/contrib/syndication.txt
@@ -16,7 +16,7 @@ Django also comes with a lower-level feed-generating API. Use this if
you want to generate feeds outside of a Web context, or in some other
lower-level way.
-.. _RSS: http://www.whatisrss.com/
+.. _RSS: https://developer.mozilla.org/en-US/docs/Glossary/RSS
The high-level framework
========================